Stop motion for warp-compressing machines



Oct. 7, 1930. A| REWNGTON 1,777,503

STOP MOTION FOR WAR? COMPRESSI-NG MACHINES Filed Dec. 14, 1927 Patented Oct. 7, 1930 UNITED STATES PATENTOFFIQE AETHUE L. REMINGTON, or wORCEsTER, MAssaonusET'Ts,` AssIGNo'n To 'wAit'fCoM' i :PEEssING MACHINE COMPANY, OE WORCESTER;MAssACHUsETTs,'-AcORPoRATioN"` F MASSACHUSETTS Application area December 14, 1927;` ?sri`a1-N0239,94s.

My invention relates to stop motions for the creels of warpers or beamers, or similar machines, adapted to wind a plurality of ends of yarn on a cylindrical drum. In stop motions heretofore constructed, each end of yarn passes under a hook and holdsl the hoolr up; when an individual end breaks, the hook which it supports falls and thereby completes'a-n electric circuit and stops'the winding machinery. l

The present invention contemplates an improvement in stop motions of this type, in that the ends of yarn are led downwardly to the hooks and then upwardly therefrom at such an angle that, accidental completion of theelectric circuit, due to chattering of the hooks which was not uncommon in prior constructions, is eliminated.

The foregoing will more fully appear from the following detailed description taken in connection with the accompanying drawings, in which- Fig. 1 is a.y plan view of a portion of a creel for a warp compressing machine, showing the invention applied thereto.

Fig. 2 is a sectional view, taken on the line 2 2 of Fig. 1.

Fig. 3 is an enlarged sectional. view, showing the present improvement in detail.

Fig. 4 is a perspective view, to more clearly illustrate the action of the device.

Like reference 'characters refer to like parts throughout the drawings.

Referring first to Fig. 1, the Creel provides vertical standards, not shown, which support a plurality of horizontal bars 1. From these bars 1 project a plurality of spindles 2, upon which packages of thread 8 are mounted. The packages 3 may be of any to desired type; and the individual ends of yarn, 4, 4 from each row of spindles 2, are led through porcelain eyes 5 in a guide board 6 around suitable tensioning devices 7 and then to the improved stop motion, indicated generally by the numeral 8.

Referring now more particularly to Figs. 2 and 8, the stop motion 8 for each rowof spindles comprises spaced frame members 9, which support horizontal bars 10 and 11 in "A5 parallel relation at the same level and a thread board 12 in front of and above the bars 10 and 11 Vwhich vprovides a plurality of porcelain eyes 13. The threads or ends of warp 4 lead from the tensioning devices 7 over the bar 10 and thence through indi vidual stop motion hooks 14, the bar 11 acting as a'limiting stop to hold the hooks 14 from rising beyond a certain point. As

clearly shown in Fig. 3, the eyes 13 arelocated considerably above the plane of the bar 11 and the tops of the hooks 14, so that the threads 4 rise sharply from the hooks 14 to the eyelets 13; consequently, the tension on the threads 4 results in a considerable component force directed upwardly to hold the hooks 14 against the bar 11. This upward component force is so great that the hooks 14 cannot drop below the bar 11, de spite variations in thread tension so that chattering or vibration of the hooks is eliminated.

Thev hooks 14, which are best shown in Fig. 4, are located in slots 15, in a guide member 1G below the bar 11 which is mounted on the same cross member 17 that supports the frames 9; the lower portions of the hooks 14 extend below the bottom of the guide member 16, and when an individual thread breaks, its particular hook 14 drops and contacts with an insulated bar 18, to complete an electric circuit to aotuate the stopping mechanism on the warper, or other machinery, as indicated diagrammatically in Fig. 2.

From the foregoing, it is apparent that by my invention, I have provided an improved stop mechanism that functions properly at all times, due to the fact that the ordinary tension on the threads 4 is sutiicient to hold the hooks 14 closely against the bar 11. Consequently slight variations of the thread tension will not result in chattering or vibration of the hooks 14 such as would ultimately cause one or more hooks 14 to accidentally engage the Contact bar 18 and stop the warper unnecessarily, while the thread was still running.

I claim,

In apparatus of the class described, the combination with a horizontal rod over which a plurality of threads are led, a bar ifi;

extending 'parallel to and above said rod providing a row of thread guides, and a plurality of vertically movable hooks through Which said threads pass between said rod and said thread guides, of a second horizontal rod located in the same plane as said rst named rod and spaced therefrom With its under surface extending above the tops of said hooks, said second rod serving to limit upward movement of said hooks under the pull of said threads, whereby said threads lead upwardly from said hooks to said thread guides at a steep angle With the tops of said hooks maintained in substantial engagement with the under surface ofrsaid second rod..

ARTHUR L. REB/LINGrTON.4 

